The No. 1 corporate endorsement star in the sport — with Coke, Nike, Upper Deck, McDonald’s and Dunkin’ Donuts deals, among others, in hand — James finds himself pitching products from rival companies.

James pitches the Galaxy Note, Samsung’s tablet line, and Beats by Dre headsets — which is being bought by Apple, a bitter rival of the Korean electronics giant.

Some feel the situation can’t continue.

“He’s going to have to pick which team he wants to play for,” said branding expert Allen Adamson. “He can’t play both sides of the field.”

The potential for conflict was crystallized on Thursday when Beats unleashed a video ad to promote its new line of Solo 2 headsets.

The World Cup-focused video features James and other athletes wearing Beats.

By contrast, Samsung recently touted its LeBron James app to draw attention to its Samsung phone. The app, which is available exclusively to Samsung phone owners, comes with exclusive photos and information about the NBAer’s life on and off the court, Samsung said.

Others feel James is such a successful pitchman that both companies will keep him aboard.

“He has an incredibly strong relationship with Samsung, and he was one of the early partners of Beats,” one person close to James told The Post. “We see no issue with that going forward.”

“The relationship with LeBron has not been a traditional sponsorship,” a Beats spokeswoman told The Post. “He is family.”